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Joe is travelling in Europe when he is approached by a Russian agent, who says he can identify a mole within the CIA in exchange for protection. Joe begins to realise that escaping his old life may be impossible.

Joe makes a new discovery in the hunt for the mole. At the same time, he realizes that he is not alone in monitoring a potential lead.

Joe is lured back into the danger zone when he suspects that Bob's killer and mole may be the same person.

Reuel gets a nightly visit and realizes that he ended up in the middle of an unexpected conflict. Kat defies her own judgment when helping an old friend.

Joe is skeptical that Gordon is guilty and continues to look at alternative theories. Eva and Gordon unleash together and dig down the battle ax after a successful event.

Joe continues to follow the evidence and makes a new discovery that intensifies his attempts to find Vasili.

Tracy and Mae decide to disappear for a while. Joe has finally learned of Vasili's whereabouts and is aiming for a reunion.

Kat witnesses when Volk takes the law into his own hands. Mae's discussions with Senator Thrush have unintended consequences.

Joe runs out of options and is forced to put his loved ones at great risk. Mae makes tough demands on Reuel.

Life changes forever when things do not go as Joe planned. Kat has to choose side.